旋挖钻机钻桅(也称桅杆)的动作至关重要,若钻桅缸(以下简称倾缸)无动作,则不能随时调节桅杆的垂直度,导致成孔不垂直而成为废孔;若发动机数据不显示,则无法对发动机的重要数据进行实时监控,易造成发动机损坏。本文以XR280型旋挖钻机为例,简述在施工现场对上述2种故障的排查方法。 Rotary drilling rig drilling mast (also known as the mast) action is crucial, if the drill mast cylinder (hereinafter referred to as tilt cylinder) no action, you can not adjust the verticality of the mast, resulting in a hole is not vertical and become waste hole; if the engine Data is not displayed, you can not monitor the engine’s important data in real time, easy to cause engine damage. In this paper, XR280 rotary drilling rig, for example, briefly described in the construction site of the two troubleshooting methods.